Re: four into four exhaust system 1981 DOHC custom special!

Posted by unclehowlie on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/four-into-four-exhaust-system-1981-DOHC-custom-special-tp458128p458129.html

I don't have balance tubes on my 81 750c, but if you have them I would try to keep them. I am new to the motorcycle world but I found some basic info on "H pipes" on the flowmaster website,

"Flowmaster strongly recommends using an "H" pipe, commonly known as a "balance tube" on all "true dual" exhaust systems. An "H" pipe equalizes the pressures between both banks of the engine giving a broader and flatter torque curve throughout the rpm range. It also eliminates "back-rap" common on deceleration, and creates a deeper mellower tone both inside and outside of the vehicle."

hope this helped